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Gaya APA

Greenwald, J. (2009). 50 Cara Mengubah Kekurangan Menjadi Kelebihan . : Raih Asa Sukses.

Gaya MLA

Greenwald, Jeff. "50 Cara Mengubah Kekurangan Menjadi Kelebihan". : Raih Asa Sukses, 2009. Text.